On A Red Station Drifting - Aliette de Bodard: a wild mixture of a station, run by a failing AI and strict Vietnamese behavioural rules.

Station Eleven - Emily St. John Mandel, plot: https://en.wikipedia.org/wiki/Station_Eleven

Nine Fox Gambit: Yoon Ha Lee: disgraced officer of space fleet must capture fortress protected by complex mathematics.

Theatre of the Gods and Hunters and Collectors by Matt Suddain. Both defy a one line plot description, look them up. Theatre was one of the best books I have ever read.

This is How You Lose the Time War - Amal el Mohtar and Max Gladstone. Two opposing generals mess with time to gain a personal meeting.

Sea of Rust - C. Robert Cargill: the story of a scavenger robot